Grok 4.5 Cost Per Task: The 4.2x Efficiency Test
Grok 4.5 launched July 8 at $2 and $6 per million tokens with a 4.2x token-efficiency claim. Does it really cost less per task than Claude Opus 4.8?
Software that builds software
Coding agents
The model matters. The harness, workflow and economics around it often matter more.
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Guides to AI coding agents, harness engineering, workflows, editors and the economics around them.
OpenCode vs Claude Code vs OpenClaude: Benchmarks
Only one of these three coding agents shows up on a benchmark leaderboard. The Terminal-Bench 2.1 numbers, the missing scores, and how to choose.
Best Models for Hermes Agent: Speed, Cost, Value
Hermes Agent runs 300-plus models, so which one should you actually run? A grounded 2026 guide to the best pick for performance, cost, and value.
Hermes Agent: Why the Harness Beats the Model
Nous Research shipped Hermes Agent, an open-source AI agent that learns as it works. Here is what it does and why the harness now beats the model.
How Much Does It Cost to Run an AI Agent in Production?
Published ranges for AI agent costs disagree by 10x. Here is the actual formula, modeled against real 2026 API rates, so you can price your own workload.
Agent Arena: The AI Agent Leaderboard Explained
Arena, formerly LMArena, ranks AI agents from over a million real sessions using causal tracing, not style votes. How Agent Arena works and who leads.
The Only MCP Servers Worth Installing in 2026
Most MCP server lists are directory dumps. The tested consensus is five servers, a strict tool budget, and three catalogs worth bookmarking.
Claude Code Harness Guide: Skills, Hooks, Subagents, MCP
A 2026 engineering guide to the Claude Code harness: CLAUDE.md, skills, hooks, subagents, MCP and plugins, with the context cost of each layer.
Harness Engineering in 2026: Techniques Beyond MCP
The named harness engineering techniques of 2026: ratchet rules, Ralph loops, spec-driven development and evaluator agents, with the cost of each.